v3.8.0.1

Stock incentive plans (Tables)

12 Months Ended

Dec. 31, 2017

Stock incentive plans

Schedule of stock-based compensation expense

		Years ended December 31,
		2017			2016			2015
Network operations		$	2,174		$	2,144		$	1,504
Development and technology			1,068			1,070			731
Selling and marketing			2,060			1,842			3,411
General and administrative			8,913			7,749			3,752
​	​	​	​	​	​	​	​	​	​	​
Total stock-based compensation expense		$	14,215		$	12,805		$	9,398
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Summary of stock option activity

Number of Options (000's)

Weighted Average Exercise Price

Weighted-Average Remaining Contract Life (years)

Aggregate Intrinsic Value

Outstanding at December 31, 2016

3,084

$

7.04

3.8

$

17,145

Exercised

(1,776

)

$

5.21

Canceled/forfeited

(25

)

$

6.56

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Outstanding at December 31, 2017

1,283

$

9.58

3.8

$

16,573

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Exercisable at December 31, 2017

1,282

$

9.58

3.8

$

16,560

Summary of RSU activity

		Number of Shares (000's)			Weighted Average Grant Date Fair Value
Non-vested at December 31, 2016			3,825		$	6.55
Granted			617		$	13.00
Vested			(974	)	$	7.57
Canceled/forfeited			(144	)	$	8.84
​	​	​	​	​	​	​	​
Non-vested at December 31, 2017			3,324		$	7.35
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Tabular disclosure of the allocation of equity-based compensation costs to a given line item on the balance sheet and income statement for the period. This may include the reporting line for the costs and the amount capitalized and expensed.

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